Scania DDU DTC 789 BWE control unit, no CAN communication

DDU DDU control unit · Scania

Code 789 (decimal). Some diagnostic tools show it in hexadecimal as 000315.

In short

The DDU control unit is not receiving CAN messages from the BWE control unit.

Applies to: DDU1 (DDU)

What does Scania DDU fault code 789 mean?

What causes Scania DTC 789?

How does the system react?

How to fix Scania DDU fault code 789?

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This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.

Code 789 in other Scania systems

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